10. Consider the following free body diagram of the forearm…

10. Consider the following free body diagram of the forearm and hand segment. If the muscle moment arm is 1/3 the distance of the segment weight moment arm (to the center of mass) and the muscle force acts directly vertical, to maintain static equilibrium, the elbow flexor muscle force must be what percentage of forearm weight?  

For the following 2 questions, use the equations you develop…

For the following 2 questions, use the equations you developed in B above and account for the proper sign. Show all steps of your work. Use 4 decimal places for sin, cos, or distance values, and 1 decimal for final force and torque values. The moment arms are .0087 m for the muscle, and .2819 m for the weight of the limb.